Recent reports point to a mounting public health concern identified as antimicrobial resistance (AMR). This health problem arises when disease-causing germs like bacteria, viruses, fungi, or parasites develop resistance against the medicines intended to eradicate them. This makes common infections increasingly difficult to manage and treatment options become significantly limited. AMR substantially extends the duration of diseases, enhances their spread, escalates fatalities, and is rapidly becoming a global health crisis.
Dr. Arshnee Moodley, a team leader at the International Livestock Research Institute, asserts that AMR complicates the treatment of infections in humans, animals, and plants, transforming conventional illnesses into fatal conditions. Medicines like antimicrobials that typically treat infections are losing their potency due to the rise in AMR.
These critical medicines, which encompass antibiotics, antifungals, antivirals, and antiparasitics, are used to prevent or treat infections. But as drug resistance escalates, our ability to manage infectious diseases and safeguard our food supply chains becomes increasingly precarious.
The COVID-19 pandemic underscored the severity of not having effective treatments for an infectious disease. An excessive and incorrect usage of antimicrobials is exacerbating the problem of AMR. Sometimes they are erroneously used to promote growth in farming or compensate for poor hygiene rather than disease treatment, giving microbes more opportunities to mutate and gain resistance, thereby making these medicines ineffective.
Reports from the World Bank, World Organisation for Animal Health, alongside AMR researchers, warn that without any remedial action, AMR has the potential to cause severe economic damage comparable to the 2008 financial crisis. It is projected that by 2050, AMR could obliterate 3.8% of the global Gross Domestic Product annually and escalate poverty by pushing 28 million people into it. Significant productivity losses in industries such as agriculture and livestock pose serious threats to food security and livelihoods.
Low and middle-income countries bear the brunt of the AMR crisis due to limited access to diagnostics, vaccines, and correct treatment procedures. Consequently, drug-resistant infections often remain undetected or are incorrectly treated. This leads to farmers losing entire flocks or herds to incurable infections, resulting in food insecurity and substantial income loss.
AMR’s impact is comparable to major health challenges like HIV/AIDS and malaria, directly causing an estimated 1.27 million deaths annually and indirectly contributing to nearly 5 million more. Climate change is an emerging factor in the proliferation and deterioration of AMR. Rising temperatures, extreme weather conditions, and floods can alter pathogen spread and antimicrobial application.
Higher temperatures stimulate bacterial growth and facilitate easier transmission of resistance genes. Flooding can disperse drug-resistant pathogens from sewage into water supplies, raising the risk of infections in both humans and animals. Additionally, the residues of antimicrobials in manure may disrupt microbial processes in the soil, potentially influencing greenhouse gas emissions.
AMR calls for urgent action across all sectors. Effective preventive measures would include vaccination, improved diagnosis, enhanced hygiene and infection prevention in hospitals and farms. Responsible use of antimicrobials in both humans and animals appears key to slowing the emergence of drug resistance, while ensuring access to basic health and veterinary services, including adequate medicines, vaccines, and diagnostics.
AMR thus poses potential threats to healthcare, agriculture, and global development. Progress towards Universal Health Coverage, Sustainable Development Goals like zero hunger (SDG 2) and good health and well-being (SDG 3) could be undermined. Without urgent, coordinated action, the world risks entering a post-antibiotic era where even minor infections become lethal, emphasizing the silent and unfolding nature of this pandemic.